Remove devtools_bridge component

components/devtools_bridge/socket_tunnel_connection.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/devtools_bridge/socket_tunnel_connection.h"
-
-#include <stdlib.h>
-
-#include "net/base/io_buffer.h"
-#include "net/base/net_errors.h"
-#include "net/socket/stream_socket.h"
-
-namespace devtools_bridge {
-
-SocketTunnelConnection::SocketTunnelConnection(int index) : index_(index) {
-}
-
-SocketTunnelConnection::~SocketTunnelConnection() {
-}
-
-void SocketTunnelConnection::Write(scoped_refptr<net::IOBufferWithSize> chunk) {
-  // TODO(serya): While it is unlikely (socket normally much faster than
-  // data channel) we should disconnect if too much data buffered.
-  buffer_.push_back(chunk);
-  if (buffer_.size() == 1) {
-    current_ = new net::DrainableIOBuffer(chunk.get(), chunk->size());
-    WriteCurrent();
-  }
-}
-
-void SocketTunnelConnection::BuildControlPacket(char* buffer,
-                                                int op_code) {
-  static_assert(kControlPacketSizeBytes == 3,
-                "kControlPacketSizeBytes should equal 3");
-  buffer[0] = kControlConnectionId;
-  buffer[1] = op_code;
-  buffer[2] = index_ + kMinConnectionId;
-}
-
-void SocketTunnelConnection::WriteCurrent() {
-  while (true) {
-    while(current_->BytesRemaining() > 0) {
-      int result = socket()->Write(current_.get(), current_->BytesRemaining(),
-          base::Bind(&SocketTunnelConnection::OnWriteComplete,
-                     base::Unretained(this)));
-      if (result > 0)
-        current_->DidConsume(result);
-    }
-    current_ = NULL;
-
-    buffer_.pop_front();
-    if (buffer_.empty())
-      return;  // Stop writing.
-
-    net::IOBufferWithSize* chunk = buffer_.front().get();
-    current_ = new net::DrainableIOBuffer(chunk, chunk->size());
-  }
-}
-
-void SocketTunnelConnection::OnWriteComplete(int result) {
-  if (result > 0) {
-    current_->DidConsume(result);
-    WriteCurrent();
-  }
-}
-
-void SocketTunnelConnection::ReadNextChunk() {
-  if (!read_buffer_.get()) {
-    read_buffer_ = new net::GrowableIOBuffer();
-    read_buffer_->SetCapacity(kMaxPacketSizeBytes);
-  }
-  // Header of the data packet.
-  *read_buffer_->StartOfBuffer() = index_ + kMinConnectionId;
-  read_buffer_->set_offset(1);
-
-  int result = socket()->Read(
-      read_buffer_.get(),
-      read_buffer_->RemainingCapacity(),
-      base::Bind(&SocketTunnelConnection::OnReadComplete,
-          base::Unretained(this)));
-  if (result == net::ERR_IO_PENDING)
-    return;
-  else
-    OnReadComplete(result);
-}
-
-void SocketTunnelConnection::OnReadComplete(int result) {
-  if (result > 0) {
-    OnDataPacketRead(read_buffer_->StartOfBuffer(),
-                     read_buffer_->offset() + result);
-  } else {
-    OnReadError(result);
-  }
-}
-
-}  // namespace devtools_bridge